Description:3D printed guns are under fire. The blueprints for the gun that can be made on a 3D printer were downloaded 100,000 times before the US Department of State pressured the company to remove them. The New South Wales Police department used those blueprints, a $1700 desktop 3D printer, and some pocket money on materials to make two of them. In their testing of the homemade firearms, they found that the plastic weapon is powerful enough to deliver a fatal shot. (1:03)